Journal of Chemical Sciences | |
Core-shell Au/Ag nanoparticles embedded in silicate sol-gel network for sensor application towards hydrogen peroxide | |
Ramasamy Ramaraj11  Shanmugam Manivannan1  | |
[1] Centre for Photoelectrochemistry, School of chemistry, Madurai Kamaraj University, Madurai 625 021$$ | |
关键词: Core-shell Au/Ag nanoparticles; modified electrode; electrocatalysis; hydrogen peroxide; sensor.; | |
DOI : | |
来源: Indian Academy of Sciences | |
【 摘 要 】
The electrocatalytic activity of core-shell Au100-ð‘¥Agð‘¥ (ð‘¥ = 15, 27, 46, and 60) bimetallic nanoparticles embedded in methyl functionalized silicate MTMOS network towards the reduction of hydrogen peroxide was investigated by using cyclic voltammetry and chronoamperometric techniques. Core-shell Au/Ag bimetallic nanoparticles were characterized by absorption spectra and HRTEM. The MTMOS silicate sol-gel embedded Au73Ag27 core-shell nanoparticles modified electrode showed better synergistic electrocatalytic effect towards the reduction of hydrogen peroxide when compared to monometal MTMOS-Aunps and MTMOS-Agnps modified electrodes. These modified electrodes were studied without immobilizing any enzyme in the MTMOS sol-gel matrix. The present study highlights the influence of molar composition of Ag nanoparticles in the Au/Ag bimetallic composition towards the electrocatalytic reduction and sensing of hydrogen peroxide in comparison to monometal Au and Ag nanoparticles.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912040508064ZK.pdf | 724KB | download |